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公开(公告)号：US08567530B2
公开(公告)日：2013-10-29
申请号：US12830481
申请日：2010-07-06
申请人： James S. Barbera
发明人： James S. Barbera
IPC分类号： E21B7/28
摘要： A collapsible cutter bit or rock head for use with an underground auger boring machine has an expanded position for cutting rock in front of an underground pipe and a collapsed position for withdrawing the rock head through the underground pipe. The auger boring machine is configured to bore a passage through a body of soil and rock and simultaneously lay the underground pipe in the passage. Forward rotation of the cutter bit causes expansion while collapse of the cutter bit may be driven by reverse rotation of the cutter bit or another mechanism.
摘要翻译： 与地下螺旋钻镗床一起使用的可折叠切割刀头或岩石头具有用于在地下管道前方切割岩石的膨胀位置和用于通过地下管道取出岩石头的折叠位置。 螺旋钻机被构造成穿过通过土体和岩石的通道，同时将地下管道放置在通道中。 刀头的正向旋转引起膨胀，同时可以通过刀头或另一机构的反向旋转驱动刀头的塌陷。
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公开(公告)号：US07779920B2
公开(公告)日：2010-08-24
申请号：US12125681
申请日：2008-05-22
摘要： A bottom hole assembly in a casing-while-drilling operation is retrieved by displacing the fluid in the casing string with a less dense fluid than the fluid in the annulus. The bottom hole assembly moves upward in the casing string in response to an upward force due to the different densities of fluid in the casing string and in the annulus. Displaced fluid flows out of the casing string and through a restrictive orifice of a choke. The flow area of the orifice is varied as the bottom hole assembly moves upward to control the rate at which the bottom hole assembly moves upward.
摘要翻译： 通过以比环状物中的流体更不致密的流体移动套管柱中的流体来回收在套管同时钻井操作中的井底组件。 响应于由于套管柱和环形空间中的不同流体密度而产生向上的力，底部孔组件在套管柱中向上移动。 排出的流体流出套管柱并通过扼流圈的限制孔。 当底孔组件向上移动以控制底孔组件向上移动的速率时，孔的流动面积是变化的。
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公开(公告)号：US20090025981A1
公开(公告)日：2009-01-29
申请号：US12284082
申请日：2008-09-18
申请人： Per G. Angman , Robert M. Tessari
发明人： Per G. Angman , Robert M. Tessari
IPC分类号： E21B10/64
摘要： A method for drilling boreholes using casing as the drill string and for removing a drilling assembly from the wellbore while leaving the casing in the well bore. In the method, the drilling assembly is prepared for removal from the wellbore by launching a release tool and manipulating the drilling assembly using the release tool.
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公开(公告)号：US20070051538A1
公开(公告)日：2007-03-08
申请号：US11279223
申请日：2006-04-10
申请人： Per Angman , Robert Tessari
发明人： Per Angman , Robert Tessari
IPC分类号： E21B7/20
摘要： A method for drilling boreholes using casing as the drill string and for removing a drilling assembly from the wellbore while leaving the casing in the well bore. In the method, the drilling assembly is prepared for removal from the wellbore by launching a release tool and manipulating the drilling assembly using the release tool.
摘要翻译： 一种使用套管作为钻柱钻孔的钻孔方法，并且用于在将该套管留在井眼中时从井筒移除钻井组件。 在该方法中，通过发射释放工具和使用释放工具操纵钻孔组件，准备钻井组件以从井筒移除。
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公开(公告)号：US20050126826A1
公开(公告)日：2005-06-16
申请号：US10735323
申请日：2003-12-12
申请人： Keith Moriarty , Michael Johnson
发明人： Keith Moriarty , Michael Johnson
摘要： A directional casing drilling system includes a casing string, a mud motor operatively coupled to the casing string, a rotary steerable system operatively coupled to the mud motor, and a drill bit operatively coupled to the rotary steerable system.
摘要翻译： 定向套管钻井系统包括套管柱，可操作地联接到套管柱的泥浆马达，可操作地联接到泥浆马达的旋转可操纵系统以及可操作地联接到旋转导向系统的钻头。
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公开(公告)号：US5743344A
公开(公告)日：1998-04-28
申请号：US473881
申请日：1995-06-07
CPC分类号： E21B10/66
摘要： A retractable drill bit system 10 comprises a drive sub 18 which is adapted for connection to a lower end of a drill 12, a tool 20 for installing and retracting drill bit segments 22 from the drive sub 18; and an insert 24 for selectively locking the bit segments 22 to an end of the drive sub 18 and releasing the bit segments 22. A plurality of recesses 5B are formed about an inner circumferential wall at one end of the drive sub 18 and a landing seat 32 formed about the inner wall upstream of the recesses 58. The area of the interior wall between the landing seat 32 and recesses 58 is profiled with a series of tapered and level surfaces. The tool 20 includes a slidable cradle 176 extending from one end about which the bit segments 22 are held during installation and retrieval. The bit segments 22 being held in place about the cradle by an elastic band 198. The insert 24 is provided at one end with a series of keyways 218 which locate over the bit segments 22 when the bit segments are locked to the drive sub 18. The insert 24 is always retained within the drive sub 18. Bit segments 22 are carried by the tool 20 to the drive sub 18 and locked in place by the insert 24. The tool 20 can then be withdrawn and the drill 12 operated in the normal manner. To retrieve the bit segments 22, the tool 20 is relowered into the drill and then withdrawn a short distance to retract the insert 24 so that the bit segments 22 collapse back onto the cradle 176 and can then be withdrawn from the drill 12.
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公开(公告)号：US5271472A
公开(公告)日：1993-12-21
申请号：US960667
申请日：1992-10-14
申请人： Richard E. Leturno
发明人： Richard E. Leturno
CPC分类号： E21B10/66 , E21B10/322 , E21B7/208
摘要： Wellbores are formed in the earth with elongated, tubular drillstems which include retrievable bit assemblies. The retrievable bit assembly includes a body having locking dogs engageable with cooperating recesses formed in a sub at the bottom of the drillstem. The bit assembly includes radially extendable and retractable arms with cutters thereon for forming the wellbore to a diameter greater than the drillstem, but whereby the arms may be retracted to withdraw the bit assembly through the drillstem with wireline retrieval apparatus or the like. The wellbore may be drilled with a tubular drillstem comprising wellbore casing with a bit connected to the lower end of the drillstem and retrievable through the drillstem by the wireline retrieval apparatus whereby the casing may be left in the wellbore upon completion of drilling operations.
摘要翻译： 井筒在地球上形成有细长的管状钻孔，其包括可回收的钻头组件。 可回收钻头组件包括具有锁定杆的主体，该主体可与形成在钻杆底部的副部件中的协作凹槽啮合。 钻头组件包括径向延伸和可缩回的臂，其上具有切割器，用于将井眼形成为大于钻杆的直径，但是由此臂可以缩回以通过具有线缆取出装置等的钻杆将塔组件抽出。 井筒可以用包括钻井套管的管状钻杆钻出，其钻头连接到钻杆的下端，并且可以通过钻缆回收装置通过钻杆回收，由此在钻井操作完成时可将壳体留在井筒中。
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公开(公告)号：US5111893A
公开(公告)日：1992-05-12
申请号：US632979
申请日：1990-12-24
申请人： Alf G. Kvello-Aune
发明人： Alf G. Kvello-Aune
CPC分类号： E21B10/66 , E21B10/322 , E21B7/20
摘要： A device for drilling and lining holes in earth bores wherein a casing is intended to be lowered into the bore along with the drilling unit. The drilling unit is mounted on a rotating drill. The drilling unit includes a plurality of cutters which can be arranged in the extended active position or can be retracted to a passive position arranged within the casing of the drilling unit. Drilling fluid through an activating piston repositions the cutters between the passive and the active position. The drilling unit includes a gripping device which contacts a groove in the casing which carries the casing down the bore with the drilling unit. Threaded ribs within the drilling unit act as a pump to maintain down hole drilling fluid pressure. A valve is provided in conjunction with the cutters whereby when the cutters are moved to the active position the valve will open allowing flow of the drilling fluid.
摘要翻译： 用于在地球孔中钻孔和衬砌孔的装置，其中壳体旨在与钻井单元一起下降到孔中。 钻孔单元安装在旋转钻头上。 钻孔单元包括多个切割器，其可以布置在延伸的活动位置中或可以缩回到布置在钻孔单元的壳体内的被动位置。 通过激活活塞钻井液体将切割器重新定位在被动和主动位置之间。 钻井单元包括夹紧装置，该夹紧装置接触壳体中的凹槽，该钻孔装置使钻井单元承载壳体。 钻孔单元内的螺纹肋作为泵，以维持井下钻井液的压力。 与切割器一起提供阀，由此当切割器移动到主动位置时，阀将打开允许钻探流体的流动。
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公开(公告)号：US5040621A
公开(公告)日：1991-08-20
申请号：US503813
申请日：1990-04-03
申请人： Stig U. Lof
发明人： Stig U. Lof
摘要： A flushing device for drilling tools comprises a guide member (10) carrying a drill bit (20) and being rotatably centered by the mouth of a casing tube (11) which is adapted to follow the drilling tool downhole during drilling. The drill bit (20) has a bit portion (22) that projects laterally beyond and is spaced axially in front of the casing tube (11) so as to drill a hole larger than the casing tube (11). There are external flushing grooves (70,71) on the guide member (10) adapted to lead the outflow of flushing medium and debris from the hole during drilling into the casing tube (11). At least one of these grooves (70) extends from front to rear of the guide member (10). One or more further grooves (71) are open towards said rear while ending blindly into the periphery of the guide member (10) spaced from its front. By retraction of the guide member (10) its front enters the casing tube (11). That closes the blind grooves (71) and an intensified flushing is thus possible via the remaining open grooves (70) that extends from front to rear of the guide member (10). The cutting front (40) of the bit portion (22) is flushed rotatively in counter flow to the rotational drilling direction (8) towards the full length groove (70).
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公开(公告)号：US4770259A
公开(公告)日：1988-09-13
申请号：US017596
申请日：1987-02-24
申请人： Kjell-Ove L. Jansson
发明人： Kjell-Ove L. Jansson
CPC分类号： E21B10/327 , E21B10/40 , E21B10/66 , E21B7/20
摘要： A drill tool for rotary and/or percussion drilling includes a drill string and a cutting apparatus connected to a lower end of the drill string. The cutting apparatus has an intermediate portion which is rotatable with the drill string and includes an outer surface, a reamer is mounted eccentrically on the intermediate portion for rotation relative thereto about a longitudinal axis. The reamer includes an inner surface facing the outer surface. The reamer is driven by an arrangement comprised of a tongue disposed on either of the inner and outer surfaces and a pair of circumferentially spaced shoulder surfaces disposed on the other of the inner and outer surfaces. The tongue is selectively engageable with the shoulder surfaces along an area of contact having an upper longitudinal end which terminates below an uppermost end of the reamer, and a lower longitudinal end which terminates above a lowermost end of the reamer.
摘要翻译： 用于旋转和/或冲击钻孔的钻具包括钻柱和连接到钻柱的下端的切割装置。 切割装置具有可与钻柱一起旋转并包括外表面的中间部分，扩展器偏心地安装在中间部分上，用于围绕纵向轴线相对于其旋转。 铰刀包括面向外表面的内表面。 铰刀由包括设置在内表面和外表面中的任一个上的舌片以及设置在内表面和外表面上的另一个上的一对周向间隔开的肩部表面的布置驱动。 所述舌片沿着具有在所述铰刀的最上端终止的上纵向端部的接触区域选择性地接合，以及在所述铰刀的最下端终止的下纵向端。
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